package com.itheima.reggie.service.impl;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;

@Service
@Slf4j
public class DishServiceimpl extends ServiceImpl<DishMapper, Dish> implements DishService {
    @Autowired
    private DishFlavorService dishFlavorService;

    /**
     * 新增菜品
     * @param dishDto
     */

    //新增菜品,同时插入菜品对应的口味数据,需要操作两张表
   @Override
   @Transactional
    public void saveWithFlavor(DishDto dishDto) {
     //1.保存菜品的基本信息到菜品表dish
     this.save(dishDto);
     //2.设置菜品与口味的关系
     List<DishFlavor> flavors = dishDto.getFlavors();
     flavors.forEach(flavor->flavor.setDishId(dishDto.getId()));
     //3.保存菜品口味数据到菜品口味表dish_flavor
     dishFlavorService.saveBatch(flavors);
   }

    /**
     * 根据id查询菜品信息和对应的口味信息
     * @param id
     * @return
     */
    @Override
    public DishDto getByIdWithFlavor(Long id) {
        //查询菜品基本信息,从dish表查询
        Dish dish = this.getById(id);
        DishDto dishDto = new DishDto();
        //查询当前菜品对应得口味信息,从dish_flavor表查询
        QueryWrapper<DishFlavor> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("dish_id",dish.getId());
        List<DishFlavor> dishFlavorList = dishFlavorService.list(queryWrapper);
        dishDto.setFlavors(dishFlavorList);
        //将菜品与口味信息封装到Dto中
        BeanUtils.copyProperties(dish,dishDto);
        return dishDto;
    }
      @Transactional
      @Override
      public void updateWithFlavor(DishDto dishDto) {
      //更新dish表基本信息
      this.updateById(dishDto);
      //清理当前菜品对应的口味数据
      QueryWrapper<DishFlavor> queryWrapper = new QueryWrapper<>();
      queryWrapper.eq("dish_id",dishDto.getId());
      dishFlavorService.remove(queryWrapper);
      //添加当前提交过来的口味数据
      List<DishFlavor> flavors = dishDto.getFlavors();
      flavors.forEach(flavor->flavor.setDishId(dishDto.getId()));
      dishFlavorService.saveBatch(flavors);
      }

}
